COMPUTER FUNDAMENTALS

Detailed explanation-1: -Magnetic devices such as hard disk drives use magnetic fields to magnetise tiny individual sections of a metal spinning disk. Each tiny section represents one bit . A magnetised section represents a binary ‘1’ and a demagnetised section represents a binary ‘0’.

Detailed explanation-2: -The binary data is stored as information encoded into magnetized regions on the surfaces of rapidly spinning disks. In modern drives the data is written to the disk and read from it by a read/write head that is supported on a very thin film of air-a gas bearing-as the disk spins beneath it.

Detailed explanation-3: -A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors. Hard disks, zip disks and floppy disks are common examples of magnetic disks.